The formation of the crop by four varieties of soybeans has been studied: Mageva, Svetlaya, Kasatka, and Maleta. The conducted studies have shown that in some years extremely unfavorable weather conditions for soybeans develop in the Kaluga region, which leads to an extension of its growing season and a decrease in seed yield. The Svetlaya soybean variety turned out to be the most adapted to such conditions, the seed yield of which averaged 1.63 t/ha over 2 years. In the Mageva variety, the yield was lower by 24.4%; in the Kasatka and Maleta varieties it was lower by 29.9%.
soybeans, varieties, crop structure, yield
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